Meaning of そう言えば in Japanese

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Definition of そう言えば

そういえば(souieba) 【そう言えば】

(exp) which reminds me ...; come to think of it ...; now that you mention it ...; on that subject ...; so, if you say ...
そういえば、確かに太郎を見かけました。
Come to think of it, I did see Taro.

そう言えばそういえば、鯔背な男おとこだった記憶きおくが有るあるがどうしてるするんだろな？

Now that you mention it, I remember he was a dashing man. I wonder how he's doing?

そう言えばそういえば、機内食きないしょくもまったく食べませんでしたね。

Oh yes, you didn't eat any in-flight meals either did you?

そう言えば、肝心要かんじんかなめの部分ぶぶんを何もなにも決めていなかった。

Now that you mention it, I wasn't involved in the decision-making for the vital part.

そう言えばそういえばそうだ。

Now that you say it, I think you're right.

そう言えばそういえば、子供こどもの頃ころ両親と一緒にいっしょにここに来たくることを覚えている。

Now you've mentioned it, I remember coming here with my parents when I was a child.

そう言えばそういえば、あれから３０年ねん以上いじょうも経つたつのね。

Now that you mention it, it's been more than 30 years since then.

そう言えばそういえば小さすぎるわよ、その指輪ゆびわ。

Now that I think of it, it's too small - that ring.