Mac pascal -> Lightspeed Pascal -> Think Pascal
Started using Mac Pascal (interpreted, no less) on a Mac 128 way back when, then graduated to Lightspeed Pascal on an SE and Mac II, before finishing off with Think Pascal v4 (post-Symantec acquisition). The last "4.5" release lives on in emulation on my iMac...
And my copies of "Think Pascal: User Manual" and "Think Pascal: Object-Oriented Programming Manual" sit on my bookshelf next to my copy of "Algorithms + Data Structures = Programs".
Pascal was a great language for teaching and exploring data structures, and with object libraries was powerful (and easy) enough for commercial-grade releases.