Jai Trehan

Hello :),
I saw this topic & I thought I could contribute a little for academic interest.
Yes descendents for atleast Guru Angad Dev ji (Bhai Lehna Trehan) exist.
I am one.In brief I have a very average life.
I am attaching an obituary to my great grandfather published in the Lahore Tribune on 27 Feb 1947.
The second one is offered by my grandfather & his elder brother.
The Bawa prefix is used by men decended from the first 3 gurus.Atleast we do not write our names that way any more.
To throw some light on religious practices in my family's case (though I personally am not deeply religious,but many in my family are) ,it's a blend of Gurudwaras & Temples.Ex: customs associated Births,Marriages & Death usually involve involvement of both a Gurudwara & Hindu Temples & religious teachers from both faiths though it's biased heavily towards the Gurudwara.
To further explain,the naamkaran of both me & my son was done at a Gurudwara.And my marriage and that of my father happened following simple Hindu customs & a Gurudwara was visited.
Hope this helps a little.