Wondering if Red Castle / Green Castle could be homes of the Rothschilds from the 1700'S
One (Amschel Rothschilds) home (Frankfurt) was named the Red Shield.
The other home was named Green Shield -
(House of the Green Shield, The Judengasse, Frankfurt, Germany)
https://youtu.be/NQ9v0IeHAPs
https://family.rothschildarchive.org/estates/68-house-of-the-green-shield