In both cases, they were mergers of acquisitions with existing products that had already been under development internally. The version of Maps that was bought was a desktop product, not all that different from many of the other shrinkwrapped satellite mapping programs available in the late 90s, and it was only when it was fused with the web-based Google Local ideas cooking up internally that it became the innovative product people know of.

It's very hard to identify accurate parentage for anything developed within Google, because the culture (and innovation process) is such that ideas get proposed, refined, merged with other ideas, abandoned, resurrected in other forms, implemented, iterated upon, and finally launched, often by many different groups. Even Google Search (usually identified with Larry & Sergey) isn't really their creation: large chunks were developed by Scott Hassan (eGroups founder and never actually a Google employee, though he had a big chunk of stock), Craig Silverstein, and various other Stanford students and early employees, and the ranking algorithm was completely rewritten early on by Amit Singhal.

Oftentimes the press - or just curious Internet comments - wants a single person they can associate with a product, and so they'll take a name (usually the most famous) and make something up. That's not how it really works, though. Most ideas have many parents.