I had been doing some other research on DPB Online, when I came across this information. I can't recall seeing it here, but if my post is just a repetition, then I apologize.
In my personal files, the person that I had as the Viscount was the 3rd Viscount, Ashley Kevin Godfrey HUGGINS (b. 1949) He was married twice, but childless, so the hp was his uncle, Hon. Martin James HUGGINS (b. 1928), who was the only person in remainder.
According to DPB Online, the 3rd Viscount died in 1997, when his uncle succeeded him as the 4th Viscount.
The 4th Viscount died in 2013, making the viscountcy (cr. UK 1955) extinct since that year.
DPB Online does list a living older brother of the 3rd Viscount, Hon. Michael Patrick John HUGGINS (b. 1946), but he was born before their parents' marriage, so was not eligible to inherit the title.
Brooke