The family tree below is focussed on one branch. It starts with the 8th generation as the leaves and works it's way down to the root. In the 8th generation, are Dad and his siblings from Banker Nivas, and their cousins from Tellicherry and elsewhere.
(tip - Read the index '1.2' as the 'Second Child of One'. Similarly '1.1.2' is the 'Second Child of the First Child of One'.)
8th Generation
1.1.2.5.6.1.1.1 Jagdish
1.1.2.5.6.1.1.2 Anitha
1.1.2.5.6.1.1.3 Nithin
1.1.2.5.6.1.1 Karunan
1.1.2.5.6.1.2.1 Michael Zahn
1.1.2.5.6.1.2 Bhaskaran
1.1.2.5.6.1.3.1 Prameela
1.1.2.5.6.1.3 Ramdas
1.1.2.5.6.1.4.1 Rema
1.1.2.5.6.1.4.2 Prasanna
1.1.2.5.6.1.4.3 Prema (b. 1937, m. Indirasenan)
1.1.2.5.6.1.4.4 Pavithran (dad; b. 1939, m. Rekha)
1.1.2.5.6.1.4 Indira (Granny/Achamma; b. 1917, m. Kunhiraman)
1.1.2.5.6.1.6.1 Michel
1.1.2.5.6.1.6 Bhargavi
1.1.2.5.6.1.7.1 Pushpaja
1.1.2.5.6.1.7.2 Padmaja
1.1.2.5.6.1.7.3 Sugandha
1.1.2.5.6.1.7.4 Prasannakumari
1.1.2.5.6.1.7.5 Saritha
1.1.2.5.6.1.7.6 Ramdas
1.1.2.5.6.1.7 Radha
1.1.2.5.6.1.8.1 Ratish
1.1.2.5.6.1.8.2 Shamitha
1.1.2.5.6.1.8.3 Nisha
1.1.2.5.6.1.8 Leela
7th Generation
1.1.2.5.6.1.1 Karunan
1.1.2.5.6.1.2 Bhaskaran
1.1.2.5.6.1.3 Ramdas
1.1.2.5.6.1.4 Indira
1.1.2.5.6.1.5 Parvathy
1.1.2.5.6.1.6 Bhargavi
1.1.2.5.6.1.7 Radha
1.1.2.5.6.1.8 Leela
1.1.2.5.6.1.9 Sathi
1.1.2.5.6.1 Narayani (Naniamma; m. Kanoth Punnoron Krishnan)
6th Generation
1.1.2.5.6.1 Narayani
1.1.2.5.6.2 Krishnan
1.1.2.5.6.3 Narayanan
1.1.2.5.6.4 Rohini
1.1.2.5.6.5 Revathi
1.1.2.5.6.6 Padmanabhan
1.1.2.5.6.7 Chandrasekharan
1.1.2.5.6 Gouri (Gouriamma; m. Punna Kunhiraman)
5th Generation
1.1.2.5.1 Sekharan
1.1.2.5.2 Laxmi
1.1.2.5.3 Devesan
1.1.2.5.4 Padmanabhan
1.1.2.5.5 Sunanna
1.1.2.5.6 Gouri
1.1.2.5 Paaru (m. Raman)
4th Generation
1.1.2.1 Cheeru
1.1.2.2 Chaathu
1.1.2.3 Kunhikannan
1.1.2.4 Cheru
1.1.2.5 Paaru
1.1.2.6 Unni
1.1.2.7 Kunhambu
1.1.2.8 Paanchali
1.1.2.9 Achuthan
1.1.2 Kunkichi (m. Paalathaayi Vachali Kelan)
3rd Generation
1.1.1 Nurumbu
1.1.2 Kunkichi
1.1.3 Kunhambu
1.1 Kunhikannan Gurukkal (m. Chaathoth Chirutha)
2nd Generation
1.1 Kunhikannan Gurukkal
1.2 Chaathappan
1.3 Othenan
1 Kannan Vaidyer
1st Generation / Root
1 Kannan Vaidyer
(tip - Read the index '1.2' as the 'Second Child of One'. Similarly '1.1.2' is the 'Second Child of the First Child of One'.)
8th Generation
1.1.2.5.6.1.1.1 Jagdish
1.1.2.5.6.1.1.2 Anitha
1.1.2.5.6.1.1.3 Nithin
1.1.2.5.6.1.1 Karunan
1.1.2.5.6.1.2.1 Michael Zahn
1.1.2.5.6.1.2 Bhaskaran
1.1.2.5.6.1.3.1 Prameela
1.1.2.5.6.1.3 Ramdas
1.1.2.5.6.1.4.1 Rema
1.1.2.5.6.1.4.2 Prasanna
1.1.2.5.6.1.4.3 Prema (b. 1937, m. Indirasenan)
1.1.2.5.6.1.4.4 Pavithran (dad; b. 1939, m. Rekha)
1.1.2.5.6.1.4 Indira (Granny/Achamma; b. 1917, m. Kunhiraman)
1.1.2.5.6.1.6.1 Michel
1.1.2.5.6.1.6 Bhargavi
1.1.2.5.6.1.7.1 Pushpaja
1.1.2.5.6.1.7.2 Padmaja
1.1.2.5.6.1.7.3 Sugandha
1.1.2.5.6.1.7.4 Prasannakumari
1.1.2.5.6.1.7.5 Saritha
1.1.2.5.6.1.7.6 Ramdas
1.1.2.5.6.1.7 Radha
1.1.2.5.6.1.8.1 Ratish
1.1.2.5.6.1.8.2 Shamitha
1.1.2.5.6.1.8.3 Nisha
1.1.2.5.6.1.8 Leela
7th Generation
1.1.2.5.6.1.1 Karunan
1.1.2.5.6.1.2 Bhaskaran
1.1.2.5.6.1.3 Ramdas
1.1.2.5.6.1.4 Indira
1.1.2.5.6.1.5 Parvathy
1.1.2.5.6.1.6 Bhargavi
1.1.2.5.6.1.7 Radha
1.1.2.5.6.1.8 Leela
1.1.2.5.6.1.9 Sathi
1.1.2.5.6.1 Narayani (Naniamma; m. Kanoth Punnoron Krishnan)
6th Generation
1.1.2.5.6.1 Narayani
1.1.2.5.6.2 Krishnan
1.1.2.5.6.3 Narayanan
1.1.2.5.6.4 Rohini
1.1.2.5.6.5 Revathi
1.1.2.5.6.6 Padmanabhan
1.1.2.5.6.7 Chandrasekharan
1.1.2.5.6 Gouri (Gouriamma; m. Punna Kunhiraman)
5th Generation
1.1.2.5.1 Sekharan
1.1.2.5.2 Laxmi
1.1.2.5.3 Devesan
1.1.2.5.4 Padmanabhan
1.1.2.5.5 Sunanna
1.1.2.5.6 Gouri
1.1.2.5 Paaru (m. Raman)
4th Generation
1.1.2.1 Cheeru
1.1.2.2 Chaathu
1.1.2.3 Kunhikannan
1.1.2.4 Cheru
1.1.2.5 Paaru
1.1.2.6 Unni
1.1.2.7 Kunhambu
1.1.2.8 Paanchali
1.1.2.9 Achuthan
1.1.2 Kunkichi (m. Paalathaayi Vachali Kelan)
3rd Generation
1.1.1 Nurumbu
1.1.2 Kunkichi
1.1.3 Kunhambu
1.1 Kunhikannan Gurukkal (m. Chaathoth Chirutha)
2nd Generation
1.1 Kunhikannan Gurukkal
1.2 Chaathappan
1.3 Othenan
1 Kannan Vaidyer
1st Generation / Root
1 Kannan Vaidyer