[Oyk]

There is a Tay and a Lim surname there. Maybe divorced husbands of his sisters? Children still follow fathers surnames but fathers kena booted out liao.

There are also a Xu and Li in addition to the above.  That makes 4 altogether.

Since he had only 3 sisters with no husband listed there, so even if they were divorced, we would expect to see 3 ex-husbands' surnames.  But there were 4.

I am waiting for SgBuffet, who is hiding, to provide his source so we can know if this "Obituary" was put up by SWH's loved ones.