私が知る限りでは

as far as I know

→ 私
phrase Rare #41,669
as far as I know Used to limit a statement to the speaker's knowledge and acknowledge that it may not be complete or certain. The では can be omitted in some contexts.
JA: 私が知る限りでは、彼女はまだ結婚していません。
EN: As far as I know, she isn't married yet.

私が知る限りでは子供はいないはずよ

As far as I know, she doesn’t have any children.

私が知る限りでは彼は頼りになる人だ

As far as I know, he's reliable.

私が知る限りではその理論に関するよい書物はない

As far as I know, there are no good books on that theory.

私が知る限りでは彼は車で来ます

As far as I know, he’s coming by car.