Board Thread:Spoilers!/@comment-24304025-20170602212916/@comment-4877635-20170629180941

Lady Junky wrote: '''Is there any info you can share for Once Upon a Time about who Henry’s wife will be? —Rebecca'''Well, the casting call for [NAME REDACTED] describes Lucy’s momma as a “strong-willed, independent woman with a no-nonsense sensibility and a warm heart at her core.” Life hasn’t always been kind to [NAME REDACTED], but she is “sharp and resourceful” and never gives up on herself — or those she believes in.

source: http://tvline.com/2017/06/29/flash-season-4-spoilers-barry-iris-time-jump/ The fact that the name is redacted (Which means censored for security/legal purposes) means that Henry's wife is probably a well know character or a huge secret :)