No, it doesn't look anything like a Spanish or Portuguese word. It is English.
William Harrington Leahy died in 1987.
William is a name just like here in the US.
The Portuguese version of William is Guilherme.
Ashleigh Harrington's birth name is Ashleigh Elizabeth Harrington.
Buck Harrington's birth name is Syril J. Harrington.
Curtis Harrington's birth name is Gene Curtis Harrington.
Hamtree Harrington's birth name is James Carl Harrington.
Joey Harrington's birth name is John Joseph Harrington.
Ken Harrington's birth name is Kenneth Powell Harrington.
Kerrianne Harrington's birth name is Kerrianne Rae Harrington.
Seth Harrington's birth name is Seth Mason Harrington.
Jay Harrington's birth name is James H. Harrington III.